baber/WOPTO huggingface dataset:
Patent GB-1085846-A (GB)
Title: Production of pyrazinoylguanidines
Inventor: JR EDWARD JETHRO CRAGOE
IPC: C07D498/04
Filed: 1964-10-12
Abstract: Pyrazinoylguanidines of the formula <FORM:1085846/C2/1> wherein R is hydrogen, halogen, C1- 5 alkyl, C3- 6 cycloalkyl, trihalomethyl or phenyl; R1 is hydrogen, halogen, trihalomethyl, C1- 5 alkyl or C3- 6 cycloalkyl; R2 is hydrogen, C1- 5 alkyl, aryl or aralkyl; R3 is hydrogen, C1- 5 alkyl (optionally substituted by hydroxy, phenyl, halophenyl or C1- 5 alkoxy-phenyl), aryl, alkanoyl, benzoyl, alkylideneamino or aralkylideneamino; R4 is hydrogen or C1- 5 alkyl; and R5 is hydrogen, alkyl or phenyl-C1- 5-alkyl, are prepared by reacting a 4H-pyrazino-[2,3-d][1,3]oxazin-4-one of the formula <FORM:1085846/C2/2> with a guanidine of the formula NH2-C(= NR2)NR3R4, preferably in the presence of an anhydrous solvent, under an inert atmosphere and under basic conditions.  The pyrazinoyl guanidines of Formula III can be hydrolysed to the amines of the formula <FORM:1085846/C2/3> e.g. using dilute mineral acid.  The 4H-pyrazino-oxazinones of Formula II are prepared by condensing a 3-aminopyrazinoic acid of the formula <FORM:1085846/C2/4> with an acid anhydride of the formula (R5CO)2O; when R5 is hydrogen, a mixture of formic acid and acetic anhydride is employed.  The pyrazanoic acids of Formula I in which R is chlorine can be prepared by chlorination of the methyl esters of the acid, followed by hydrolysis to give the free acid.  The acids can also be made by hydrolysis of the corresponding amides.
Patent GB-1529080-A (GB)
Title: Mpx stereo signal demodulators
IPC: H03D1/22
Filed: 1976-10-06
Abstract: 1529080 Stereo de-multiplexers SONY CORP 6 Oct 1976 [9 Oct 1975 10 Oct 1975] 41563/76 Heading H4R In a multiplex stereo signal decoder the composite signal is fed, via terminal 1, to two differential amplifiers 6 and 7 one of which has a further differential amplifier 8 and 9 in each of its collector circuits. The differential amplifiers 8 and 9 are supplied with the 38 kHz sub carrier signal to effect demodulation of the composite stereo-signal, which appear at terminals 3L and 3R, and the collector circuits of the differential amplifiers 7, 8, and 9 are interconnected by a current mirror circuit Q11, Q12, Q13, and Q14 so that by variation of the composite signal input to differential amplifier 7, by variation of resistor 5, the stereo separation can be varied without varying the dc level of the output signals. As described the transistors of the differential amplifiers 6 and 7 are of the Darlington type and a muting circuit, 30 to 35, is provided which, on detection of an IF signal level below a predetermined threshold mutes the output by cutting off the current supplied by the common emitter feed transistors Q3 and Q6 of the differential amplifiers 6 and 7. Because of the current mirror arrangement muting is effected without change of dc level of the output.
Patent GB-1480713-A (GB)
Title: Wirewound coil block
IPC: H01F5/04
Filed: 1975-10-13
Abstract: 1480713 Coils DAINI SEIKOSHA KK 13 Oct 1975 [16 Oct 1974] 41816/75 Heading H1P A coil block, e.g. for a transducer of an electronic timepiece comprises a magnetic core 1 mounted within a cylindrical portion 3 of a coil former 2 of, e.g. plastic, and extending outwardly thereof. Holes la are formed in the projecting ends of the core for mounting, and flanges 4a, 4b of the coil former are provided; the former being wider than the latter. A coil 6 is wound on portion 3 between the flanges, and its ends are wound in plural turns round the wider flange where they act as terminals for soldered connection to other members. The flange may be formed with spaced circumferential gooves 5a, 5b for the windings.
Patent GB-1346126-A (GB)
Title: Process for the manufacture of 1,1-dianthraquinonyls
IPC: C09B1/00
Filed: 1972-09-08
Abstract: 1346126 Preparing 1,1<SP>1</SP>-dianthraquinonyls CIBA-GEIGY AG 8 Sept 1972 [14 Oct 1971] 41924/72 Heading C4P 2,2<SP>1</SP>-Diacylamino-1,1<SP>1</SP>-dianthraquinonyls of the general formula wherein the anthraquinone nuclei may be further substituted and R is alkyl or aryl are prepared by reacting a compound of the general formula wherein X is halogen and R is as above with copper powder, optionally in presence of a catalyst, e.g. iodine in dimethylsulphoxide. The reaction takes place at 50-130‹ C. using 0À1- 5À0 parts dimethyl sulphonide per part by weight of anthraquinone starting material and 1À5 moles of copper per mole of anthraquinone starting material. The compounds are intermediates.
Patent GB-1524225-A (GB)
Title: Polymerisation of ethylene-vinyl acetate
IPC: C08F218/08
Filed: 1975-10-14
Abstract: 1524225 Ethylene/vinyl acetate copolymers WACKER-CHEMIE GmbH 14 Oct 1975 [29 Nov 1974] 41995/75 Heading C3P Aqueous ethylene-vinyl acetate copolymer dispersions are prepared in a continuous process by copolymerizing the monomers in an aqueous emulsion in the presence of an emulsifier and/or protective colloid and in the presence of a water-soluble redox initiator whose reducing agent: oxidizing agent molar ratio is at least 3 : 1, while the monomers at such a rate that the concentration of unreacted monomer does not exceed 15% by weight of the total reaction mixture. In the examples, the reducing agent was sodium sulphite, or sodium formaldehydesulphoxylate while the oxidizing agent was tert.-butylhydroperoxide or hydrogen peroxide.
Patent GB-1282634-A (GB)
Title: Particulate solids
IPC: C09C3/00
Filed: 1969-08-22
Abstract: 1282634 Pigment / polymer compositions BALM PAINTS Ltd 22 Aug 1969 [23 Aug 1968] 42033/69 Headings C3B C3P and C3R [Also in Division C4] Particulate solids of particle diameter 1-700 microns comprise 75-95% by wt. pigment and 25-5% by wt. polymeric binder, the pigment volume concentration being less than 82%, and the pigment having an oil absorption of 90 maximum (Gardner-Coleman method A.S.T.M. D-1483-60). Numerous pigments are specified, in particular inorganic white or colourless primary pigments and extenders. The binder is such as to be compatible with but inert to a film-forming polymer medium in which the solids are to be incorporated. The solids may be prepared from a solution of polymer in a non- aqueous liquid containing a dispersion of pigment, by emulsification in water in the presence of a colloidal suspending agent, and removal of the non-aqueous liquid. In examples, particulate solids are prepared and used in coating compositions as follows: (1) TiO 2 -polymethyl methacrylate solids of 12 microns, added to an acrylic latex coating composition containing further TiO 2 , water, sodium hexametaphosphate, partially hydrolysed polyvinyl acetate, and a surfactant; (2) solids as in (1) but of 200 microns; (3) TiO 2 -methyl methacrylate/ethyl acrylate/methacrylic acid copolymer solids of 25 microns; (4) TiO 2 -vinyl acetate copolymer solids of 20 microns; (5) clay-polymethyl methacrylate solids of 30 microns; (6) and (7) TiO 2 - polymethyl methacrylate and TiO 2 -polybutyl methacrylate solids of 12 microns having greater than the critical pigment volume concentration of TiO 2 ; (8) TiO 2 -styrene copolymer solids of 10-80 microns; (9) TiO 2 -cross-linked epoxy resin solids of 15 microns are prepared from a paste formed from epichlorohydrin/bisphenol epoxy resin, polyamide resin as cross-linking agent, and TiO 2  in toluene and amyl acetate, the paste being added to aqueous part-hydrolysed polyvinyl acetate and hydroxyethyl cellulose, and poured into water to allow particles to settle; they are then filtered off and dried, and are then added to a safflower oil-modified alkyd resin coating composition containing TiO 2 , mineral spirits, and Co and Pb naphthenate driers.
Patent GB-1277287-A (GB)
Title: Apparatus for contacting a liquid vapour mixture with a bed of particulate solids
Inventor: EFFRON EDWARD
IPC: B01J4/00
Filed: 1969-08-26
Abstract: 1277287 Vapour/liquid/solid contactor ESSO RESEARCH & ENG CO 26 Aug 1969 [30 Sept 1968] 42371/69 Heading B1F Distributors for a liquid/vapour mixture introduced at 6, 7, 8 into downward flow catalytic reactor 4 comprises tubes 20 with containers 22 suspended underneath and tubes 14 with slits 16 and caps 18. Tubes 14 and 20 pass through and are supported by plates 12.
Patent GB-932155-A (GB)
Title: Improvements in or relating to drive transmissions
Inventor: LOYNES ALFRED HERBERT WALTER
IPC: F16H37/00
Filed: 1959-12-14
Abstract: 932,155. Variable-speed gear. DOWTY ROTOL Ltd. Dec. 14, 1960 [Dec. 14, 1959], No. 42504/59. Class 80 (2). [Also in Group XXX] In a drive transmission a power drive may be established to an output member from a first input member through a clutch, or a manual drive from a second input member, the clutch being released upon the engagement of the manual operating member with the second input member. The invention is shown as applied to the drive of a winch worm 17 and wheel 15, the first input member being the stub shaft 36 of an hydraulic motor 20, and the second input member a splined sleeve 38 engageable by a handle 24, normally used for regulating the motor control valve, upon the removal of a cover plate 26. The drive from shaft 36 to worm 17 is transmitted through a dog clutch 34, 35, release of which is effected upon engagement of handle 24 with sleeve 38 by a spring plunger 65 in the handle (Fig. 4). With handle 24 in position a direct drive to worm 17 may be obtained, or a high ratio drive through a three-element epicyclic gear 41, 42, 43. As shown an engaged ratchet clutch 45, 46 associated with the epicyclic gear enables the latter to lock solid for direct drive in one direction, but operation of a trigger device 55 locks the gear annulus 43 and engages a second ratchet clutch 51, 52 to permit operation of planet pinions 42 and the transmission of a higher ratio to the worm 17. The handle may also be of a form to prevent operation of the ratchet gear, Fig. 3 (not shown), thus allowing hand drive in either direction.
Patent GB-1482003-A (GB)
Title: Light weight cable housing
IPC: F16L47/06
Filed: 1974-10-02
Abstract: 1482003 Pipe joints; pipes PHONE-DUCS Inc 2 Oct 1974 [3 Oct 1973] 42786/74 Headings F2G and F2P A conduit section for connection to similar sections comprises an elongate outer wall 24 having a male portion 20 at one end and a female portion 18 at the other, longitudinally and transversely disposed internal partition walls, 32 and 30 respectively, dividing the conduit into longitudinally-extending passageways 35, portions of these partition walls 30, 32 projecting longitudinally outwardly at one end of the conduit section as at 71 and the partition walls 30, 32 being correspondingly recessed at the other end as at 73 to receive the projecting partition walls of a similar conduit section. In the particular embodiment described the male end 20 of the conduit section is provided with an external peripheral groove 38 to receive the rib 42a of a resilient gasket 42 the ribs 42c on whose outer surface are in sealing engagement with the tapered inner surface 43 of the female end 18 to form a labyrinth seal, the joint being secured by spring clips 22 reversely bent at each end as at 80 to locate on flange 55 and surface 64a of the female end 18. The enclosing wall 24 of the conduit section incorporates continuous, external, peripheral reinforcing ribs 26 and circumferentially disposed gussets 66 to reinforce the junction between an angle portion 64 and the enclosing wall 24 at the female end 18. The partition walls 30 and 32 may be tapered to facilitate the withdrawal of the passage-forming dies used in the moulding of the conduit sections.
Patent GB-1520635-A (GB)
Title: Inspection vehicle
IPC: B66F11/04
Filed: 1975-10-03
Abstract: 1520635 Road/rail vehicles ARMFIELD ENG Ltd 3 Oct 1975 [4 Oct 1974] 43133/74 Heading B7D In mobile inspection apparatus comprising a wheeled vehicle 1 having an elevatable boom assembly which carries an inspection platform or gondola 8, the vehicle 1 has main wheels 2 equipped with wide solid rubber tyres so that they can run on a road or on a railway, steering mechanism associated with the front ones of the main wheels 2 is locked when running on rails, and retractable guide wheels 13, 14 are engageable with lateral faces of the rails to keep the main wheels 2 on the rails. Screw jacks 17, 18 move pivoted supports 15, 16 for the guide wheels 13, 14 between extended and retracted positions, and the guide wheels 13, 14 are adjustably mounted on the supports to allow for variations in track gauge. The vehicle is supported on the main wheels 2 by suspension springs which are rendered inoperative when running on rails by lowering screw jacks 19 into engagement with the axles of the wheels 2. The steering mechanism is locked when running on rails by a lever, Fig. 2 (not shown) which is pivotally mounted on the front axle and is moved into engagement with an element of steering mechanism when one of the screw jacks 19 is lowered.
Patent GB-1206622-A (GB)
Title: Improvements in or relating to photo-copying apparatus
IPC: G03B27/62
Filed: 1967-09-25
Abstract: 1,206,622. Photocopying apparatus. W-ZINDLER [trading as LUMOPRINT ZINDLER K.G.]. Sept.25, 1967 [Sept. 26, 1966] , No. 43612/67. Heading G2A. A photocopying apparatus in which an original is fed past a slit 7 in the upper wall 2 of the apparatus, an image being reflected by a mirror 120 through a lens (12) Fig. 1 (not shown), on to a moving copying sheet, has a hinged cover 40 which, when raised as shown, allows of books being copied, and which, when lowered (Fig. 1) over the slit 7, allows of single sheets being copied. As seen, the book is placed on a transparent plate 6 which is fed past the slit 7 by axially sub-divided transport rollers 32-35, movement of the plate tripping microswitches 54, 55, 56 to switch on the copy sheettransport mechanism, to switch on the lamp (8) and to switch off the lamp. A store 14 of copy sheets is provided, and a sheet is fed by rollers 17 through an exposure station to a developing station 20 and thence out of the apparatus. For a single sheet original, the plate 6 is moved to the left (as shown) and the cover 40 lowered, Fig. 1. An original is inserted between the cover and the upper wall of the apparatus, and is conveyed between rollers 32-35 and pressure rollers (41-44) mounted in the cover past the slit 7 to a sloping plane 131. To avoid the necessity of refocussing the apparatus whenever a change from book to sheet copying, or vice versa, is made the cover 40 also carries a transparent plate (60), or a slotted metal plate arranged to space an original in sheet form from the upper wall 2 in the region of the slit 7, the amount of spacing being equal to the effective distance of a book form original above the slit 7.
Patent GB-967681-A (GB)
Title: Improvements relating to the formation of metallic coatings
Inventor: JOHNSON RONALD WILLIAM
IPC: C23C18/42
Filed: 1959-12-31
Abstract: A process for the production of a metallic coating on a basis metal, e.g. copper, brass, nickel-silver, beryllium-copper or iron nickel cobalt alloys, comprises treating said basis metal with an acid solution, e.g. 250 ml./litre of conc. HCl, of a salt of a platinum metal, e.g. 1-10 g./p./l., so as to dissolve more of the basis metal than is chemically replaced, to give a thick, e.g. 0.4-1.3m , porous coating the pores of which are subsequently sealed by chemical reaction. Pt, Pd and Rh may be used as their chlorides (simple or complexed) but Ru is used as ammonium ruthenium nitrosochloride or ruthenium sulphamate at 95  DEG C. Pd and Rh solutions may be used at 25  DEG C. but Pt solutions are used at 65  DEG C. The pores in this first coating are then sealed preferably by deposition of a metal such as gold but sealing with ammonium hydroxide with or without hydrazine, potassium iodide solution, sodium hydroxide solution or a silver nitrate solution is also disclosed.  The treatment of printed circuits, electrical contact members and transistor bases of an iron-cobalt nickel alloy is disclosed.  U.S.A. Specification 2,532,283 is referred to.
Patent GB-1422930-A (GB)
Title: Thermoforming of thermoplastic materials
IPC: B29C51/00
Filed: 1974-10-16
Abstract: 1422930 Sheet forming MOBIL OIL CORP 16 Oct 1974 [7 Nov 1973] 44771/74 Heading B5A A method of thermoforming sheet plastics material, e.g. foamed polystyrene, to form, e.g. an eggbox, comprises heating the sheet to a first relatively high temperature, e.g. 110‹ C, and forming it between moulds, and then reshaping the article at a second lower temperature, e.g. below 7‹ C. In the example, the box is shaped with square round-cornered egg recesses, and then re-shaped with recesses having round cross-sections.
Patent GB-1400593-A (GB)
Title: Growing crystals from a melt
IPC: C30B13/28
Filed: 1972-09-28
Abstract: 1400593 Controlling growing crystals PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 28 Sept 1972 [1 Oct 1971] 44804/72 Heading B1S The diameter of a growing single crystal as it is drawn from a melt by a seed crystal is monitored by an optical device which comprises means for irradiating the surface of the melt with a narrow light beam, means for receiving the reflected radiation and means for comparing the reflected radiation with that of the desired reflected radiation. In the device the direction of the incident radiation and the reflected radiation encloses angles of at most 10‹ with the direction of drawing of the crystal and the incident beam is directed onto that area of the surface of the melt which is curved due to the presence of the crystal but is sufficiently far remote from the edge of the growing part of the crystal to ensure that in that area the surface of the melt deviates from a horizontal position by at most 5‹. The radiation may be produced by an incondescent lamp, an arc lamp or laser. The crystal may be germanium, silicon, or a semiconductor of a material of groups III-V e.g. a garnet or spinel material. As shown in the Figure a crystal 5 on seed 4, attached to drawing rod 3 is grown from a melt 2 contained in a crucible 1 heated by high frequency induction by coil 30 controlled by generator 31, and the diameter of the crystal is controlled by adjusting the high frequency current in the coil 30 by the optical device shown (11 to 21), with the output from photoelectric cells 25 and 26, being amplified by amplifiers 33 and 34 and controller 32. The optical device shown consists of a helium-neon laser 11, periodically interrupted by a chopper disc 12, a divergent lens 14, a convergent lens 20, a mirror 21 and a scanning point 9 on the surface 7 of the melt. The reflected beam is focused by mirror 21 and lens 26 through transparent plates 18 and 19 and mirror 16 onto the photodiodes.25 and 26 from which the desired comparison is made in controller 32.
Patent GB-1173537-A (GB)
Title: Process for the preparation of N-Tritylimidazoles
Inventor: BUCHEL KARL-HEINZ
IPC: C07D233/62
Filed: 1968-09-23
Abstract: 1,173,537. Fungicides containing N-tritylimidazoles. FARBENFABRIKEN B A Y E R A.G. 23 Sept., 1968 [26 Sept., 1967], No. 45013/68. Heading A5E. [Also in Division C2] Fungicidal compositions comprise an N- trityl imidazole of the formula: where X is halogen, alkyl, alkoxy, nitro, halogenalkyl or cyano, n is 0, 1 or 2, R<SP>1</SP>, R<SP>11</SP> and R<SP>111</SP> are hydrogen, alkyl or aryl, or R<SP>11</SP> and R<SP>111</SP> together with the ethylene bridge to which they are attached form a benzene ring, in admixture with a solid diluent or carrier or a liquid diluent or carrier containing a surfaceactive agent.
Patent GB-1411231-A (GB)
Title: Stabilization of rubber polymers and butadiene copolymers
IPC: C08K5/36
Filed: 1972-10-03
Abstract: 1411231 Stabilizer for unsaturated polymers AMERICAN CYANAMID CO 3 Oct 1972 [17 Jan 1972] 45605/72 Headings C3G C3P and C3Q A composition comprises a material which is normally subject to deterioration by oxidation selected from (1) a rubber containing at least 5% by weight of repeating unsaturated hydrocarbon units, (2) a rubber-modified polymer containing at least 5% by weight, based on the weight of rubber, of repeating unsaturated hydrocarbon units, and (3) a copolymer of butadiene containing at least 5% by weight, based on the weight of the copolymer, of butadiene units, and a stabilizer of the formula wherein R is C 1- C 18  alkyl, R<SP>1</SP> (in the 5- or 6- position) is hydrogen or C 1  to C 18  alkyl and the ligand (A) is water, ammonia or an amine. The polymer may be natural rubber, a diene polymer or copolymer rubber or a thermoplastic polymer modified by admixture with, or grafting on to, one of these. It may also be a thermoplastic modified by copolymerization with a diene, such as " high impact polystyrene ". Examples are given of polymers of all these types compounded by milling or by mixing in solution with stabilizers containing a wide range of ligands (A) and groups R and R<SP>1</SP>.
Patent GB-1027939-A (GB)
Title: Improvements in and relating to sintered bodies of aluminium oxide
IPC: C04B35/10
Filed: 1962-12-03
Abstract: A transparent dense polycrystalline sintered body of alumina and not more than 0.5% by weight of a metal oxide is made by heating at above 1800 DEG  C. and below 10 mm.  Hg a compressed compact mixture of a -alumina and a substance which on sintering yields said metal oxide. An organic binder may be incorporated and removed oxidatively before sintering.  The metal oxide is MgO, CoO, or NiO, and may be initially present as the oxide, carbonate, chloride or fluoride of the appropriate metal. The body has density greater than 3.96 g./m , mean crystal grain size not greater than 10m , an in-line transmissitivity of at least 40% for thickness of 0.5 mm. at wavelength 0.4-2m , and may transmit well in the I.R. range above 2m .  The particles before sintering should have energy content greater than 4 cal./g., measured as water vapour adsorption energy, which may be imparted by a combination of normal or tangentially directed forces, e.g. in a vibration mill with a free swinging amplitude action.  The material for sintering should be compressed at not less than 1000 kg./cm.2 The bodies have high heat conductivity and are resistant to thermal shock.  The bodies may be used in the formation of high-temperature lamp envelopes, or parts of cutting tools, drawing dies, or turbine blades.  If the body contains coloured oxides, e.g. of Cr, Ni or Co, certain regions of the spectrum will be absorbed.  Reference has been directed by the Comptroller to Specification 931,023.
Patent GB-971554-A (GB)
Title: Improvements in or relating to electric logical circuits
Inventor: CLARKE RAYMOND WILLIAM
IPC: G06F7/502
Filed: 1961-12-21
Abstract: 971,554. Binary half adders. MULLARD Ltd. Sept. 24,1962 [Dec. 21,1961], No. 45834/61. Heading G4A. The "exclusive-or" circuit of Specific; ion 887,933 or Specification 970, 549 is modified to a half-adder by addition of a further transistor T3 connected as shown, so that a carry output is obtainable from its collector. The current through T3 is only considerable when both inputs P1, P2 go positive, since for a single such input most of the current is drawn through T1 or T2 to provide the sum output. To obtain at the "carry" output a current equal to that provided at P1 or P2 one of the resistors R3,R4 may be connected directly to earth instead of to the emitter of T3. Figs. 2-4 (not shown) illustrate modifications in which the basic circuit has two diodes connected in parallel with R3 and R4 as described in the Specification.